Lubricating means



Nov. 15,1927. 1,649,155

' E. w. DAVIS LUBRIGATING MEANS Filed Oct. 25. 1925 'EENES'IL" DAVIS, QF OAK PK, ILLINUIS, ASSIGYNOZR T THE BASSICK MANUFACTUR- ING COMPANY, OF CHICAGO, ILLINOLS, A CURPORATIQN 0E IDELAWI'L mmonnrno' n Application filled uctoher at, was. tierlel its. worse.

. M invention relates to improvements in lubricating means, and is particularly concerned with the rovi'sion of a novel lubricant compressor orming a part oil a lubri- 55 eating system comprising a, plurality of httings attached to the various hearings to he lubricated and a compressor for successively making sealed connection with the fittings so as to permit lubricant under high ressure to be forced. into'the fittings an 1 the bearings connected therewith.

Use of the objects of the present invention is to provide a compressor adapted to torm n part of such lubricating system end 1W particularly adapted for the use of supplylug oil to the bearings to be lubricated.

- Another cbjectot my present invention is to provide a lubricant compressor such as described comprising means whereby sealed 29 connections with the various fittings can be easily made and unmade.

Another object of my invention is to provide a construction by means of which comparatively high pressures can be "exerted upon the lubricant by a. sim le thrust enerted in the direction of the I tting.

A still turther object of my invention is to provide a construction ofv the character described comprisin a. barrel having a discherge conduit whic performs the tunctiou of e high pressure cylinder and a istcn up erable therein and formed of a gas et which acts both as a piston end as a vulve to permit the passage of lubricant from the barrel in; to the discharge-end ot the conduit or pressure cylinder.

Another object of my invention is to re- "vide n copressor such as described w is simple in construction, economical toman ulalcture end eosy to operate.

@ther ohjects of my invention will eppenr as this description progresses, reterencehe ing had to the accompanying drawings, in which-- x Figure .l is a side elevation ct my improved compressor partially in central longitndinal section; and

Figure 2 is an erd longitudinal sectional detcil.

Similerreilerenoe characters will be used in hoth figures for referring to similar parts.

Reierring to the drawings, my improved compressor comprises a cylindrical barrel 5 which many he of conventional construction and which is provided with the removable cap 6 secured thereto by e screw-threaded connection 7. Preferably, this cap is rovided with a central outwnrdly in.

nipple 8 to act as a hearing for the smoo plston rod 9 which slides therein. lit desired, a guslret l0 and a gland ll. may be used for insuring a tight connection both the nipple Bend the piston rod 9.

A rigid discharge conduit 12 isthreed into the nipple 13 at the opposite end of the a high pressure compressor arrel and to cylinder in which is slidably mounted n, piston comprising the follower piste it end the cup leather 15, both ol which are secured to the inner end of the piston rod 9 by means of a screw 16, or in any other suitable manner. I prefer to enlarge the bore 17 of the discharge conduit l2 to 1 rovide a shoulder 18 engageeble by the to ower it upon the re-v turn stroke of the piston rod to act no u stop to limit the return stroke. in pin 19 assing through the piston rod and adapts to engage with the inner end of the discharge conduitlfi, may be used for limiting the discharge stroke of the piston.

lhreeded to vthe outer end of the discharge conduit 12 is u sleeve 20, the outer end oil which is counter bored, as shown at 21, to provide a shoulder 22 tor engagi the end oi the fitting 23. This fitting is well-known construction and further description thereof is believed to be unnecesso d n annular valve seat 24: is clamped between the shoulder25 :tormed at the inner end ol the sleeve 20 and the outer end of the discharge conduit 12; A ball closure 26 is yieldingly held upon the velve sent M by means or the compression spring 27, The other end of the compression spring 27 reacts against o. washer 28 in the bottom oi the cup leather 29, the outer face of which is adapted to contact with the end of the fitting 23. The cup leather is provided with a central aperture 30 registering with the opening inthe washer 28 to permit the discharge of lubricant lm'the compressor.

The inner end oil the bore of the sleeve 20 is slightly enlarged to provide a shoulder 31 for limiting the outward movement ol the gasket 29.

in use the compressor is held with the l discharge conduit below the level oil the hertill around t e inner end ofthe piston rod and rod 9 is forced inwardly a diflerential prespast the piston 15. The dischar conduit or high pressure cylinder having n filled in this manner, the operator places the outer end of the sleeve20 over the fitting 23 and pushes i'nwardl upon the handle 31 carried by the outer en of the piston rod. The diameter of the piston 15 is larger than the area of the gasket 29, which 13 in contact with the fitting 23, so that when the piston sure is produced which firmly holds the eeve 20 in contact with the fitting and the pressure of the lubricant exerted upon the rear of the gasket 29 holds the gasket in firm contact with the end of the nipple, so as efiectively to prevent any leakage between the compressor and the fitting.

Ulpon releasing the pressure on the handle 31 t e ball closure 26 will close upon its seat and thereby prevent lubricant from escaping from the high pressure cylinder. The opening 30 in the gasket can be made small enough so that capillary action will prevent the escape of lubricant from the space between the valve seat 24 and the gasket 29.

It will, of course, be understood that the seal between the nipple 8 andthe piston rod 9 will not be made too tight to permit the entrance of air into the barrel to relieve the vacuum produced therein by the removal of lubricant therefrom.

From the above description it will be apparent that I have provided a compressor which is simple in construction, economical to manufacture and which comprises means whereby sealed connections with the various fittingsrcan be successively made and unmade with the greatest facility.

While havedescribed the details of construction of the preferred embodiment of my invention, it is to be clearl understood that my invention is not limits to these details, but is capable of other adaptations and -modifications within the scope of the ap pended claims.

Having thus described my invention, what I claim is:

1. A lubricant compressor comprisin a barrel having a rigid discharge con uit communicating therewith, a cap for said barrel having an opening registering with the bore of said discharge conduit, a piston rod slidable in said opening and projecting into said discharge conduit, said piston rod having a smaller diameter than said bore, so as to provide a clearance around said piston rod, a cup leather piston carried by the mner end of said piston rod and forming a communicating therewith, a

valve permitting the passage of lubricant from said barrel to said discharge conduit a sleeve secured to the outer end of sai discharge conduit, a valve seat clamped between said sleeve and said discharge conduit, a cup leather gasket in the outer end of said sleeve, the exposed area of said gasket being smaller than the effective area of said cup leather piston, a check valve for co-acting with said valve seat anda common spring for yieldingly holding said valve in its closed position and said gasket in its outermost position.

2. A lubricant compressor comprisin a barrel having a rigid discharge con uit communicating therewith, a iston rod mounted to reciprocate in said discharge conduit, said piston rod havin a smaller diameter than the bore of said discharge conduit, so as to provide a clearance around said piston rod, 9. piston carried by the inner end of said piston rod and forming a.

valve permittin the assage of lubricant from said barre to said discharge conduit, a sleeve secured to the outer end of said discharge conduit, a valve seat clamped between said sleeve and said dischar conduit, a gasket in the outer end of sai sleeve, the exposed area of said gasket being smaller than the effective area of said piston, a check valve for co-acting with said valve seat and a common spring for yieldingly holding said valve in its closed position and said gasket in its outermost position.

3. A lubricant compressor comprisin a barrel having a rigid discharge con uit iston rod mounted to reciprocate in sai discharge conduit, said piston rod havin a smaller diameter than the bore of said discharge conduit so as to provide a clearance around said piston rod, a piston carried by the inner end of said piston rod and forming a valve permitting the passage of lubricant from said barrel to said discharge conduig a sleeve secured to the outer end of sai discharge conduit, a valve seat between said sleeve and said discharge conduit, a gasket in the outer end of said sleeve the exposed area of said gasket being smaller than the effective area of said piston, a check valve for co-acting ,with said valve seat and means for yieldingly holding said valve in its closed position and said gasket in its outermost position.

4. A lubricant compressor comprisin a barrel havin a rigid discharge con uit provided at its outer end with means for receiving a fitting, a piston slidably mounted in said discharge conduit and forming a valve (permitting the passage of lubricant, past sai piston, om said barrel to the outer end 0 said dischar e conduit, an outwardly opening valve yleldably closing the outer end of said discharge conduit, and

means actuated in part by the pressure of the lubricant for elfecting a sealed connection between said conduit and a fitting.

5. A lubricant compressor comprising a barrel having a removable cap at one end and a discharge conduit at the other, a piston rod slidably mounted in said cap and projecting into said discharge conduit, said piston rod being smaller in diameter at its inner end than the bore of said discharge conduit, a cup leather secured to the inner end of said piston rod and forming both a piston for ejecting lubricant from said discharge conduit, and a valve for permitting the passage of lubricant from said barrel to-the'outenend of said discharge conduit, and means carried b the outer end of said discharge conduit sealed connection with a fitting.

6. A lubricant compressor comprising a barrel having a discharge-conduit forming a high pressure cylinder, a piston'reciprocable in said discharge conduit, a valve closing the outer end of said discharge conduit, means for effecting a sealed connection with a fitting comprising a gasket, and common means for yieldingly holding said valve in its closed position and said gasket in its outermost position.

In witness whereof, I hereunto subscribe my name this 20 day of October, 1923.

' ERNEST W. DAVIS.

of effecting a 

